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Re: [Xen-devel] [xen-unstable test] 13858: trouble: blocked/broken/pass



>>> On 24.09.12 at 10:31, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> On Mon, 2012-09-24 at 03:17 +0100, xen.org wrote:
>> flight 13858 xen-unstable real [real]
>> http://www.chiark.greenend.org.uk/~xensrcts/logs/13858/ 
>> 
>> Failures and problems with tests :-(
>> 
>> Tests which did not succeed and are blocking,
>> including tests which could not be run:
>>  build-amd64                   2 host-install(2)         broken REGR. vs. 
> 13825
> 
> Jan, I guess this is most likely down to 25935:1e6e6b49b4ac "x86:
> introduce MWAIT-based, ACPI-less CPU idle driver"?

Yes, I would think so too. But rather than reverting it I'd prefer to
understand what's wrong (since I didn't see such problem on any
of my machines here). The stack state suggests that pm_idle is
being left at NULL, and it shouldn't be too difficult to figure out
why this is so. Give me a little time; I'll revert the patch if I can't
figure it reasonably quickly.

Jan

> Sep 24 01:35:46.025150 (XEN) ----[ Xen-4.3-unstable  x86_64  debug=y  Not 
> tainted ]----
> Sep 24 01:35:46.033069 (XEN) CPU:    1
> Sep 24 01:35:46.033107 (XEN) RIP:    e008:[<0000000000000000>] ???
> Sep 24 01:35:46.033155 (XEN) RFLAGS: 0000000000010046   CONTEXT: hypervisor
> Sep 24 01:35:46.045069 (XEN) rax: 0000000000000008   rbx: 0000000000000001   
> rcx: 0000000000000003
> Sep 24 01:35:46.053054 (XEN) rdx: 0000003db54eb700   rsi: 7fffffffffffffff   
> rdi: 0000000000000001
> Sep 24 01:35:46.053115 (XEN) rbp: ffff8302357e7ee0   rsp: ffff8302357e7e58   
> r8:  0000000000000000
> Sep 24 01:35:46.065475 (XEN) r9:  000000000000003e   r10: ffff8302357e7f18   
> r11: ffff8302357e7f18
> Sep 24 01:35:46.073056 (XEN) r12: ffff8302357ee340   r13: ffff82c480263980   
> r14: ffff8302357ee3d0
> Sep 24 01:35:46.073118 (XEN) r15: 0000000000000001   cr0: 000000008005003b   
> cr4: 00000000000026f0
> Sep 24 01:35:46.085106 (XEN) cr3: 00000000bf473000   cr2: 0000000000000000
> Sep 24 01:35:46.085158 (XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: 
> 0000   cs: e008
> Sep 24 01:35:46.093483 (XEN) Xen stack trace from rsp=ffff8302357e7e58:
> Sep 24 01:35:46.093535 (XEN)    ffff82c4801a3d05 ffff8302357eca70 
> 0000000800000020 ffff82c4802ead60
> Sep 24 01:35:46.105490 (XEN)    0000000000000001 ffff8302357e7ea0 
> ffff82c48016bf07 0000000000000000
> Sep 24 01:35:46.113067 (XEN)    0000000000000000 ffff8302357e7ee0 
> fffff830fffff830 0000000000000046
> Sep 24 01:35:46.121329 (XEN)    ffff8302357e7f18 ffff82c480263980 
> ffff8302357e7f18 0000000000000000
> Sep 24 01:35:46.121391 (XEN)    0000000000000000 ffff8302357e7f10 
> ffff82c48015c2be 8302357dc0000fff
> Sep 24 01:35:46.133072 (XEN)    0000000000000001 0000000000000001 
> 0000000000000000 ffff8302357e7ee0
> Sep 24 01:35:46.141265 (XEN)    0000000000000000 0000000000000000 
> 0000000000000000 0000000000000000
> Sep 24 01:35:46.141324 (XEN)    0000000000000000 0000000000000000 
> 0000000000000000 0000000000000000
> Sep 24 01:35:46.153074 (XEN)    0000000000000000 0000000000000000 
> 0000000000000000 0000000000000000
> Sep 24 01:35:46.161216 (XEN)    0000000000000000 0000000000000000 
> 0000000000000000 0000000000000000
> Sep 24 01:35:46.161276 (XEN)    0000000000000000 0000000000000000 
> 0000000000000000 0000000000000000
> Sep 24 01:35:46.173076 (XEN)    0000000000000000 0000000000000000 
> 0000000000000000 0000000000000000
> Sep 24 01:35:46.181134 (XEN)    0000000000000000 0000000000000001 
> ffff8300bf2fe000 0000003db54eb700
> Sep 24 01:35:46.181195 (XEN)    0000000000000000
> Sep 24 01:35:46.193060 (XEN) Xen call trace:
> Sep 24 01:35:46.193101 (XEN)    [<0000000000000000>] ???
> Sep 24 01:35:46.193181 (XEN)    [<ffff82c48015c2be>] idle_loop+0x6c/0x7a
> Sep 24 01:35:46.193233 (XEN)    
> Sep 24 01:35:46.201065 (XEN) Pagetable walk from 0000000000000000:
> Sep 24 01:35:46.201114 (XEN)  L4[0x000] = 000000023b201063 ffffffffffffffff
> Sep 24 01:35:46.201165 (XEN)  L3[0x000] = 000000023b200063 ffffffffffffffff
> Sep 24 01:35:46.213078 (XEN)  L2[0x000] = 00000002357ff063 ffffffffffffffff 
> Sep 24 01:35:46.213130 (XEN)  L1[0x000] = 0000000000000000 ffffffffffffffff
> Sep 24 01:35:46.217068 (XEN) 
> Sep 24 01:35:46.217102 (XEN) ****************************************
> Sep 24 01:35:46.225485 (XEN) Panic on CPU 1:
> Sep 24 01:35:46.225526 (XEN) FATAL PAGE FAULT
> Sep 24 01:35:46.229059 (XEN) [error_code=0010]
> Sep 24 01:35:46.233466 (XEN) Faulting linear address: 0000000000000000
> Sep 24 01:35:46.237480 (XEN) ****************************************


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